$ git clone -n https://src.fedoraproject.org/rpms/supertux.git /var/lib/mock/f39-build-1577361-37960/root/chroot_tmpdir/scmroot/supertux
Cloning into '/var/lib/mock/f39-build-1577361-37960/root/chroot_tmpdir/scmroot/supertux'...
$ git fetch origin 4ed064488ac8aeb15503efe781c8f07ec4efe737:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/supertux
 * [new ref]         4ed064488ac8aeb15503efe781c8f07ec4efe737 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4ed0644 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild